JPH0944099A - Luminous display - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to easily adjust and set an emissive display section to a desired optical axis arbitrarily at each installation place by installing an optical axis adjusting lens to refract the optical axis to a specified direction on the surface of this luminous display section. SOLUTION: The light emitted from LeD light emitting elements 5 in through- holes 4a of the luminuous display section transmits the optical axis adjusting lens 2 at the time the light is released outside via convex lens parts 7a. When, therefore, the optical axis adjusting lens 2 is not arranged, the light is radiated around the optical axis B as a center as shown by broken arrows but the light transmitted through the optical axis adjusting lens 2 is eventually radiated around the optical axis A refracted by an angle θ with the optical axis B as shown by solid arrows. Then, the orientation characteristic of the luminous display section has a shape symmetrical with the angle 0 deg. of the true surface as a center as shown by bold broken lines C in the case where the optical axis adjusting lens 2 is not arranged. The characteristic included by the angle θtherefrom as shown by bold solid lines D is exhibited when the optical axis adjusting lens 2 is arranged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light emitting display using a light emitting element such as an LED light emitting element in a light emitting display section.

[0002]

2. Description of the Related Art A light emitting display is provided with a large number of light emitting elements such as light emitting elements such as LEDs (light emitting diodes) arranged in a dot matrix, or a large number of light emitting elements arranged for collective light emission display of the light emitting elements. ing. Further, this light-emitting display body is used as a display medium for images, text messages, etc. by arranging a large number of the light-emitting display bodies side by side to form a large-screen display device.

Since the large-screen display device 9 is often installed at a slightly higher place such as the wall surface F of the building as shown in FIG. 13, the spectator E can see the angles α _{H to} α _L from the viewing position. The screen of the display device 9 is viewed by looking up diagonally upward within a certain range. For this reason, each light-emitting display body that constitutes the conventional display device 9 is directed obliquely downward so that the optical axis of the light-emitting display unit coincides with the angle α _{M of the} visually recognized position where it is most commonly arranged and used. It was designed and manufactured as standard.

[0004]

However, the angle α _M of the actual visual recognition position is the height of the mounting position of the installed display device 9, that is, the height H _H of the uppermost portion and the height H _{L of the} lowermost portion. It depends on the distance L between the display device 9 and the spectator E. For this reason,
Depending on the installation location of the display device 9, the angle of the optical axis of the light-emitting display unit designed and manufactured as a standard in the factory may greatly differ from the angle α _M of the visual recognition position at the actual installation location. Moreover, in the display device 9, as the height H _D from the lowermost part to the uppermost part of the screen increases, the distance L from the audience E increases.
The shorter the angle becomes, the larger the difference between the angle α _H at the top and the angle α _{L at} the bottom from the viewing position becomes, so that the angle of the optical axis of the light emitting display unit coincides with the angle α _M at the viewing position in the central part. Even so, there may be a large difference between the uppermost angle α _H and the lowermost angle α _L.

Here, if the respective light emitting display bodies used in the display device 9 are individually designed and manufactured so that the optical axis of the light emitting display section becomes an angle corresponding to the respective installation places and the arrangement positions on the screen, It is possible to match the angle of the optical axis of the light emitting display unit with the angle α of each visible position. However, it is actually difficult to manufacture many kinds of light emitting display bodies having different light axis angles of the light emitting display section as general-purpose products. Further, even when the respective light emitting display bodies are tilted according to the installation place or the arrangement position on the screen, it is possible to match the angle of the optical axis of the light emitting display unit with the angle α of the visual recognition position. However, the light emitting display body is generally installed vertically on the wall surface of a building, etc., and it is actually difficult to install the light emitting display body while tilting it individually on site.

Therefore, conventionally, the optical axis of the light emitting display section of each light emitting display is fixed to a standard design angle of, for example, about 20 ° to 25 °, regardless of the installation place or the arrangement position on the screen. However, for the audience E, the display on the entire screen may be difficult to see, or the display at the edge may be difficult to see even if the center of the screen is good.

In view of the above circumstances, the present invention provides a light emitting display body in which an optical axis adjusting lens is arranged on the surface of a light emitting display section so that an adjustment set can be easily performed on an arbitrary desired optical axis for each installation place. The purpose is to do.

[0008]

In order to solve the above-mentioned problems, in the light-emitting display body of the present invention, an optical axis adjusting lens for refracting the optical axis in a certain direction is arranged on the surface of the light emitting display section. Characterize.

According to the above construction, the optical axis of the light emitting display section of the light emitting display can be arbitrarily adjusted in any of the up, down, left and right directions by the optical axis adjusting lens. The angle of the viewing position of the audience can be easily matched.

Further, according to the present invention, in a light emitting display provided with one or more light emitting units, one optical axis adjusting lens for refracting the optical axis in a constant direction is formed on the surface of the light emitting display section of each light emitting unit. Is placed.

According to the above construction, since the optical axis adjusting lens is arranged for each light emitting unit of the light emitting display, the optical axis can be adjusted for each light emitting unit. Therefore, for example, in the case of a large-screen display device in which a large number of light-emitting display units are combined, the angle of the visual recognition position of the audience varies depending on the installation position of each light-emitting unit, but an optical axis adjusting lens having a different refraction angle for each light-emitting unit is used. If used, the optical axis can be made to match the desired angle of the visual recognition position at any installation position.

Here, the light emitting unit means a combination of one or two or more light emitting elements which are the minimum units of light emitting display,
In the case of the dot matrix system, each display dot serves as a light emitting unit. In the case of color display, the light emitting unit may be divided for each of the three primary colors of RGB in each display dot, or the entire display dot combining these colors may be the light emitting unit.

Further, according to the present invention, in a light emitting display in which a large number of light emitting units are arranged in a horizontal row or a vertical row, the optical axis is set in a fixed direction on the surface of the light emitting display section for each of a large number of light emitting units arranged in a horizontal row. One or more optical axis adjusting lenses for refracting are arranged.

According to the above construction, the optical axis adjusting lens is arranged for each of a large number of light emitting units arranged in a horizontal row and a vertical direction as well as a large number of light emitting units arranged in a vertical and horizontal direction. Therefore, for example, one optical axis adjustment lens can be arranged collectively for a large number of light emitting units at the same height position where the angle of the visual recognition position in the vertical direction is common. When two or more optical axis adjusting lenses are arranged by dividing the optical axis adjusting lens, for example, one for each of a certain number of light emitting units having a common viewing position angle in the left-right direction. It becomes possible to arrange the optical axis adjusting lens.

Further, according to the present invention, in a light emitting display in which a large number of light emitting units are arranged, one or more optical axis adjusting lenses for refracting the optical axis in a certain direction are arranged on the surface of the light emitting display section. It is characterized by being done.

According to the above arrangement, since the optical axis adjusting lenses are arranged for a large number of light emitting units, it is possible to arrange a single optical axis adjusting lens for a large number of light emitting units whose viewing positions have substantially the same angle. it can. Further, when two or more optical axis adjusting lenses are arranged by dividing the optical axis adjusting lens, one light is collectively collected for each of a certain number of light emitting units in which the angle of the visual recognition position is almost the same. It becomes possible to arrange an axis adjustment lens.

Further, the luminescent display body of the present invention is characterized in that the optical axis adjusting lens is detachably attached to the surface of the luminescent display section.

According to the above construction, the optical axis adjusting lens is detachable, so that the optical axis adjusting lens having the optimum refraction angle of the optical axis can be easily attached on site depending on the installation place. Become.

Further, in the light-emitting display body of the present invention, the optical axis adjusting lens has a flat front and back surfaces, and a light-transmissive plate member formed by inclining one plane with respect to the other plane. Is characterized in that.

Further, the light emitting display of the present invention is characterized by using an LED light emitting element as a light emitting element of a light emitting display section.

[0021]

Embodiments of the present invention will be described below in detail with reference to the drawings.

1 to 4 show a first embodiment of the present invention. FIG. 1 is a partially enlarged vertical sectional view of a light emitting display portion of a light emitting display, and FIG. 2 is a light emitting display portion of FIG. FIG. 3 is a characteristic diagram showing the alignment characteristics, FIG. 3 is a front view of the light emitting display, and FIG. 4 is a vertical sectional view of the light emitting display of FIG.

In the present embodiment, as shown in FIGS. 3 and 4, a light emitting display body 1 having a light emitting display section consisting of only one light emitting unit will be described. As shown in FIG. 1, the light emitting display section includes a wiring board 3 in which LED light emitting elements 5 are arranged in a wiring manner.
The mask plate 4 and the convex lens collective plate 7 are bonded to the upper surface of the. That is, the wiring board 3 is a printed wiring board on which a conductive pattern is formed, and the LED light emitting elements 5 are arranged and wired at predetermined positions. The mask plate 4 is made of a silicone rubber molding plate, a glass fiber reinforced synthetic resin molding plate, an aluminum metal molding plate, or the like, and is used for each LE on the wiring board 3.
A large number of through holes 4a are formed at positions corresponding to the D light emitting elements 5. Then, the mask plate 4 is bonded onto the wiring board 3 by adhesion with a silicone rubber adhesive or the like. Therefore, the LED light emitting elements 5 are housed in the bottoms of the through holes 4a of the mask plate 4, respectively. The inner peripheral surface of each of the through holes 4a is formed with a mortar-shaped light-reflecting surface that widens on the upper side, so that the light emitted from the LED light-emitting element 5 can be efficiently reflected and emitted to the outside. ing. Further, each of the through holes 4a is filled with a sealing material 6 made of translucent silicone rubber or the like to seal the LED light emitting element 5 housed therein. A convex lens collective plate 7 is bonded to the upper surface of the mask plate 4.
The convex lens assembly plate 7 is made of translucent silicone rubber or the like in which convex lens portions 7a are formed at positions corresponding to the respective through holes 4a of the mask plate 4, and the LED in each through hole 4a is formed by these convex lens portions 7a. The light emitted from the light emitting element 5 is collected and emitted to the outside.

As shown in FIGS. 3 and 4, the wiring substrate 3, the mask plate 4, and the convex lens assembly plate 7 of the light emitting display section are all circular shapes having substantially the same diameter. Then, a large number of LED light emitting elements 5 arranged and wired on the wiring board 3 are provided.
Is emitted to the outside from the inside of each through hole 4a of the mask plate 4 through each convex lens portion 7a of the convex lens collecting plate 7, and this light emitting display portion emits light as one circular light emitting unit as a whole. It will be. The light emitting display portion is fitted into the cylindrical case frame body 8 substantially at the center thereof, and the light shielding eaves portion 8a of the case frame body 8 blocks the incidence of sunlight or the like. Further, the optical axis adjusting lens 2 is provided on the front side of the convex lens collecting plate 7 of the light emitting display section in the case frame 8.
Is detachably fitted. The optical axis adjusting lens 2 is
It is a transparent plate material such as an acrylic resin, a polycarbonate resin, or a silicone rubber, and has a flat front and back surfaces, and one plane is formed to be inclined with respect to the other plane. Therefore, the optical axis adjusting lens 2 refracts the optical axis of the transmitted light in the direction in which the thickness increases due to the inclined plane.

As shown in FIG. 1, the light emitting display section has an optical axis adjusting lens 2 when the light emitted from the LED light emitting element 5 in the through hole 4a is emitted to the outside through the convex lens section 7a.
Through. Therefore, when the optical axis adjusting lens 2 is not arranged, the light is emitted around the optical axis B as shown by the broken line arrow, whereas the light transmitted through the optical axis adjusting lens 2 is As indicated by the solid line arrow, the light is emitted around the optical axis A refracted by the angle θ with respect to the optical axis B. Therefore, the alignment characteristic (directivity) of this light emitting display unit is
When the optical axis adjusting lens 2 is not arranged, as shown by a thick broken line C in FIG. 2, the optical axis adjusting lens 2 is symmetrical with respect to an angle of 0 ° in front of the optical axis adjusting lens 2. Shows a characteristic inclined by an angle θ (θ = 10 ° in FIG. 2) from this, as indicated by a thick solid line D.

The light emitting display 1 is, as shown in FIG.
When the optical axis adjusting lens 2 is not arranged, the original optical axis B of the light emitting display section indicated by a broken arrow is attached so as to face obliquely downward. However, since the optical axis B is set to a constant angle when the case frame 8 is installed and fixed on the wall surface or the like, this angle is not always optimum depending on the installation location. Therefore, the optical axis adjusting lens 2 is fitted to refract the actual optical axis A indicated by the solid arrow with respect to the original optical axis B. That is, in FIG. 4, since the optical axis adjusting lens 2 is fitted in a direction in which the thickness becomes thicker toward the lower side, the actual optical axis A is refracted below the original optical axis B.
However, if the optical axis adjusting lens 2 is rotated, the actual optical axis A can be refracted above the original optical axis B or left and right depending on the circumstances of the installation location. Also, the actual refraction angle of the optical axis A can be arbitrarily changed by replacing it with another optical axis adjusting lens 2 having different front and back surface inclination angles.

Therefore, in the light emitting display body 1 of this embodiment, the direction and size of the actual refraction angle of the optical axis A can be arbitrarily adjusted depending on the type of the optical axis adjusting lens 2 and the rotational position in which it is fitted. The optical axis A can be made to coincide with the angle of the visual recognition position that differs depending on the installation location.
Further, by installing a large number of the light emitting display bodies 1 in a matrix form vertically and horizontally, it is possible to configure a dot matrix type display device for outdoor large screen display in which each light emitting display body 1 is one display dot. . Therefore, in the light emitting display bodies 1 arranged in a matrix in this way, the angle of the visual recognition position sequentially shifts for each position on the screen, so that the type of the optical axis adjusting lens 2 and the type of the optical axis adjusting lens 2 are individually changed for each light emitting display body 1. By changing the fitting rotation position, it becomes possible to match the optical axis A with a desired angle of the visual recognition position for each display dot (light emission unit).

In this embodiment, the convex lens collecting plate 7 is used.
Although the configuration of the light emitting display unit using the above is described, the light emitting display unit has a structure in which the light from each through hole 4a of the mask plate 4 is directly emitted to the outside without using the convex lens collective plate 7. May be. In addition, instead of the LED light-emitting element 5 sealed in each through hole 4a of the mask plate 4, this light-emitting display unit uses an LED lamp 21 in which the LED light-emitting element 5 is resin-sealed in advance. You can also

FIGS. 5 to 8 show a second embodiment of the present invention. FIG. 5 is a vertical sectional view of a light emitting display having a light emitting display section using an LED lamp, and FIG. 7 is a partial front view of the light emitting display body of FIG. 7, FIG. 7 is a partial perspective view showing another example of the light emitting display body of FIG. 5, and FIG. 8 is a display device for an outdoor large screen display using the light emitting display body of FIG. FIG. The constituent members having the same functions as those of the first embodiment shown in FIGS. 1 to 4 are designated by the same reference numerals.

In the present embodiment, a light emitting display 1 having a light emitting display section in which a plurality of light emitting units are arranged in a horizontal row will be described. Further, here, a light emitting display unit using the LED lamp 21 is shown. However, this light emitting display unit may be one in which the LED light emitting element 5 is sealed in each through hole 4a of the mask plate 4 as in the case of the first embodiment. As shown in FIG. 5, in the LED lamp 21, one or more LED light emitting elements 5 are individually resin-sealed with a transparent resin 22 having a hemispherical tip so as to function as a convex lens. The lead wire 23 connected to the LED light emitting element 5 is led out to the outside. A plurality of the LED lamps 21 are arranged on the wiring board 3 to form a light emitting display section. The light emitting display portion is fitted into the case frame body 8 substantially at the center thereof, and the light shielding eaves portion 8a of the case frame body 8 blocks the incidence of sunlight or the like. Further, the same optical axis adjusting lens 2 as in the case of the first embodiment is detachably fitted on the front side of the LED lamp 21 of the light emitting display section in the case frame 8.

In the light emitting display body 1 having the above structure, the light emitted from the LED light emitting element 5 in each LED lamp 21 passes through the optical axis adjusting lens 2 and is emitted to the outside. At this time, the optical axis A of the light transmitted through the optical axis adjusting lens 2 is refracted as shown by the solid line arrow with respect to the optical axis B shown by the broken line arrow when the optical axis adjusting lens 2 is not arranged. Will be things. Therefore, also in the light emitting display body 1 of the present embodiment using the LED lamp 21, the actual optical axis A with respect to the original optical axis B of the light emitting display unit is adjusted as in the case of the first embodiment. It can be arbitrarily adjusted by 2.

The light-emitting display 1 is formed by arranging a plurality of cylindrical light-shielding eaves portions 8a in a horizontal row as shown in FIG. 6, for example, and each light-shielding eaves portion 8a includes a light-emitting display portion and an optical axis adjusting lens 2. Can be placed. And in this case,
The light emitting display portion for each light shielding eaves portion 8a becomes a display dot (light emitting unit). Further, as shown in FIG. 7, the case frame 8 has a horizontally long box shape, and a light emitting display unit having a plurality of display dots (light emitting units) is housed in the case frame 8 and the front side It is also possible to fit one optical axis adjusting lens 2 into the. By installing a large number of these light emitting display bodies 1 in the vertical direction as shown in FIG. 8, a dot matrix type large screen display device 9 can be configured.

In the display device 9, since the light emitted from each LED lamp 21 passes through the optical axis adjusting lens 2, the optical axis A of this light is refracted with respect to the original optical axis B. Since the refraction angle of the optical axis A can be arbitrarily adjusted for each optical axis adjustment lens 2, the optical axis A can be set to an optimum angle according to the installation place. Here, when the optical axis adjusting lens 2 is attached for each display dot (light emission unit) as shown in FIG. 6, the optical axis A can be individually adjusted for each display dot. Therefore, in this case, the difference between the optical axis A in the up-down direction and the left-right direction and the angle of the visual recognition position of the spectator can be finely adjusted for each display dot. Further, as shown in FIG. 7, when one optical axis adjusting lens 2 is attached to each of a plurality of horizontal display dots (light emitting units), the installed display device 9
The optical axis A can be adjusted for each stage of. Therefore, in this case, it becomes possible to adjust the difference between the optical axis A in the vertical direction and the angle of the visual recognition position of the audience for each stage.

9 and 10 show a third embodiment of the present invention. FIG. 9 is an exploded perspective view of an outdoor light emitting display body, and FIG. 10 is a vertical sectional view of the light emitting display body of FIG. Is. The constituent members having the same functions as those of the first embodiment shown in FIGS. 1 to 4 are designated by the same reference numerals.

In the present embodiment, a light emitting display 1 having a light emitting display section in which 64 display dots (light emitting units) are arranged in a matrix of 8 × 8 dots will be described. As the light emitting display portion of the light emitting display body 1, as in the case of the first embodiment, one in which the mask plate 4 and the convex lens collective plate 7 are bonded to the upper surface of the wiring substrate 3 on which the LED light emitting elements 5 are arranged is used. However, this light emitting display unit may have a structure in which the light from the inside of each through hole 4a is directly emitted to the outside without using the convex lens collective plate 7. In addition, this light emitting display unit is
The LED lamp 21 may be used as in the case of the embodiment.

In the light emitting display body 1, four light emitting display portions, each of which has four mask plates 4 and convex lens collecting plates 7 bonded to each other on one wiring substrate 3, are arranged vertically and horizontally. On each convex lens assembly plate 7, four display dot areas (light-emission units) in which a plurality of convex lens portions 7a are densely packed in a substantially circular area are formed vertically and horizontally, and each display dot area is formed of one dot by a dot matrix method. It is designed to display. Therefore, on one wiring board 3, 4 ×
A display dot area of 4 dots (16 places) is formed, and a display dot area of 8 × 8 dots (64 places) is formed as the entire light emitting display 1. A light shielding louver 10 is attached to the front surface of the light emitting display body 1. Shading louver 10
In the above, the openings 10a are provided at the positions corresponding to the respective display dot areas, and the light shielding eaves plates 10b are provided above the openings 10a so as to block the incidence of sunlight or the like. In addition, the light shielding louver 10 is provided with a horizontally long optical axis adjusting lens 2 on the front side of the openings 10a of each step. Therefore, one optical axis adjusting lens 2 is attached to each of a plurality of display dot areas (light emitting units) arranged in a horizontal row at each stage. The optical axis adjusting lens 2 includes upper and lower light-shielding eaves plates 10b, 10b for each step.
It can be attached and removed freely by fitting it in between.

In the light emitting display body 1 having the above-described structure, as shown in FIG. 10, the light emitted from the LED light emitting element 5 of the light emitting display body 1 passes through the optical axis adjusting lens 2, so that the optical axis A of the light is displayed.
Is refracted with respect to the original optical axis B. Since the refraction angle of the optical axis A can be arbitrarily changed according to the inclination angles of the front and back surfaces of the optical axis adjusting lens 2, the optical axis A can be set to an optimum angle according to the installation place. it can. Further, when the height from the bottom to the top of the light emitting display 1 is sufficiently larger than the distance to the audience, the optical axis adjusting lens 2 in which the inclination angles of the front and back surfaces are different for each step is used. By fitting and sequentially changing the refraction angle of the optical axis A, the optical axis A of the light emitting display 1 can be made to coincide with the angle of the desired visual recognition position for each step. This is particularly effective when a large number of the light emitting display bodies 1 are arranged vertically and horizontally to form a large screen display device 9 as shown in FIG. 13, and when the spectator E views the top and bottom of the display screen. Angle α of viewing position of
If _{the H} and the angle alpha _L is greatly different, by increasing the refractive angle downward the optical axis A by fitting the optical axis adjusting lens 2 tilt angle is large enough upper side front and rear surfaces, emission for each stage The optical axis A of the display body 1 can be made to match the desired angle α of the visual recognition position, and it will not be difficult to see depending on the screen position.

11 and 12 show a fourth embodiment of the present invention. FIG. 11 is a perspective view of a display unit assembled with a light emitting display, and FIG. 12 is a vertical sectional view of the display unit of FIG. Is. The constituent members having the same functions as those of the first embodiment shown in FIGS. 1 to 4 are designated by the same reference numerals.

In this embodiment, a comparatively high display character height H is obtained by arranging a plurality of light emitting display bodies 1 side by side in the housing 11.
A display 12 as a finished product having a horizontally long display surface with a small _D will be described. The display 12 has a housing 11 in which a light emitting display 1 and its drive circuit board, a power supply circuit 13, and a display controller 14 are housed. The light emitting display 1 is a small indoor dot matrix light emitting display having a vertical 16-dot configuration without the case frame 8 and the light-shielding eaves 8a, and the light emitting display is the same as in the first embodiment. Similarly, a mask plate 4 is bonded to the upper surface of a wiring board 3 on which the LED light emitting elements 5 are arranged. However, here, the convex lens collecting plate 7 is not used, and the light from each through hole 4a is directly exposed to the outside. And each through hole 4a is one display dot (light emitting unit). However,
The light emitting display unit may have a structure using the convex lens collecting plate 7, or may use the LED lamp 21 as in the case of the second embodiment. An optical axis adjusting lens 2 is fitted in the opening of the housing 11 on the front side of the light emitting display 1. Therefore, in this case, one optical axis adjusting lens 2 for a large number of display dots (light emitting units) arranged in a matrix for each of the plurality of light emitting display bodies 1.
Is attached.

Since the display 12 is installed at a high place such as a work place and used for notifying work instructions and the like, the installation height often varies depending on the installation place.
However, by simply selecting the optical axis adjusting lens 2 attached to the housing 11, the original angle B of the light emitting display section of each light emitting display 1 can be easily adjusted to the angle A according to the installation location. Therefore, it is possible to perform an easy-to-see display at any height installation place. In this case, since it is a horizontally long display surface with a relatively small display character height, for example, the display character height is about 30 cm and the viewing distance is about 30 m.
The display character height is about 10 cm, the visual distance is about 10 m, etc., and will be described with reference to FIG.
Is much larger than the height H _D from the bottom of the screen to the top of the screen (H _D << L), and the top angle α _H and the bottom angle from the viewing position are The difference in α _L is extremely small. If this difference is within ± 5 °, one optical axis adjustment lens 2 for the entire display surface.
It is sufficient for practical use to dispose and match the angle of the optical axis A with the angle α _{M of the} visual recognition position.

Therefore, according to the present embodiment, it is possible to easily and inexpensively adapt the display 12 to a wide range of installation places only by attaching one optical axis adjusting lens 2. In this case, the optical axis adjusting lens 2 having the optimum inclination angle is selected according to the installation location, and the optical axis A is attached to the housing 11 in the final assembly process in the factory.
Adjustment. However, it is also possible that the optical axis adjusting lens 2 can be replaced appropriately at the installation site.

Further, in the ordinary general display unit 12, a translucent acrylic plate or the like is originally fitted in order to protect the housing 11 from dust and protect the display surface. However, in the display device 12 of the present embodiment, the optical axis adjusting lens 2 may be mounted instead of this, and therefore it is possible to also serve as dustproof of the housing 11 and protection of the display surface.

In any of the light-emitting display bodies 1 of the above-described embodiments, for example, 5 within the range of 5 ° to 30 °.
If 6 types of optical axis adjusting lenses 2 having different refraction angles for each degree are manufactured, by selecting one from these, the angle of the optical axis A can be made to a sufficient degree for practical use. You will be able to easily adjust and set.

[0044]

As is apparent from the above description, according to the light emitting display of the present invention, the standard design of the light emitting display section can be achieved only by preparing several kinds of optical axis adjusting lenses having different refraction angles. The angle of the optical axis can be adjusted by the optical axis adjusting lens so as to match the angle of the visual recognition position of the spectator according to the installation place or the arrangement position on the screen. Further, for example, the optical axis can be adjusted extremely easily only by selecting and attaching an optical axis adjusting lens having a refraction angle suitable for the place or position at an installation site or the like.

[Brief description of drawings]

FIG. 1 shows a first embodiment of the present invention and is a partially enlarged vertical sectional view of a light emitting display section of a light emitting display body.

2 is a characteristic diagram showing the first embodiment of the present invention and showing the alignment characteristic of the light emitting display section of FIG. 1. FIG.

FIG. 3 shows the first embodiment of the present invention, and is a front view of a light emitting display body.

FIG. 4 shows a first embodiment of the present invention and is a vertical cross-sectional view of the light emitting display body of FIG.

FIG. 5 shows a second embodiment of the present invention, in which L
It is a longitudinal cross-sectional view of a light-emitting display body including a light-emitting display unit using an ED lamp.

FIG. 6 is a partial front view of the light emitting display body of FIG. 5, showing a second embodiment of the present invention.

FIG. 7 is a partial perspective view showing another example of the light emitting display body of FIG. 5, showing a second embodiment of the present invention.

8 shows a second embodiment of the present invention and is a vertical cross-sectional view of a display device for outdoor large-screen display using the light emitting display body of FIG.

FIG. 9 shows a third embodiment of the present invention and is an exploded perspective view of an outdoor light emitting display.

FIG. 10 shows a third embodiment of the present invention,
It is a longitudinal cross-sectional view of the light emitting display body of FIG.

FIG. 11 shows a fourth embodiment of the present invention,
It is a perspective view of the indicator which assembled the light emitting indicator.

FIG. 12 shows a fourth embodiment of the present invention,
It is a longitudinal cross-sectional view of the display of FIG.

FIG. 13 is a side view showing an angle of a visual recognition position when a display device is installed.

[Explanation of symbols]

 1 light emitting display 2 optical axis adjusting lens 5 LED light emitting element

Claims (7)

[Claims] 1. A light emitting display body, wherein an optical axis adjusting lens for refracting the optical axis in a fixed direction is arranged on the surface of the light emitting display section. 2. A light emitting display body having one or more light emitting units, wherein one optical axis adjusting lens for refracting an optical axis in a fixed direction is arranged on the surface of the light emitting display portion of each light emitting unit. A light emitting display body characterized by the above. 3. A light-emitting display body in which a large number of light-emitting units are arranged in a horizontal row or a vertical row, and one light-reflecting element is provided on the surface of a plurality of light-emitting units arranged in a horizontal row to refract the optical axis in a certain direction. Alternatively, a light emitting display body is characterized in that two or more optical axis adjusting lenses are arranged. 4. A light emitting display in which a large number of light emitting units are arranged, wherein one or more optical axis adjusting lenses for refracting the optical axis in a certain direction are arranged on the surface of the light emitting display section. Characteristic light emitting display. 5. The light emitting display body according to claim 1, wherein the optical axis adjusting lens is detachably attached to a surface of the light emitting display section. 6. The light transmissive plate member, wherein the optical axis adjusting lens has flat front and back surfaces, and one flat surface is inclined with respect to the other flat surface. 5
The light emitting display according to any one of 1. 7. The light emitting display body according to claim 1, wherein the light emitting display body uses an LED light emitting element as a light emitting source of a light emitting display section.